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Calculate the number 510

NUMBERMANIA: Calculate the number 510 using numbers [4, 2, 3, 4, 95, 834] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once.

Correct answers: 11

The first user who solved this task is Nasrin 24 T.

#brainteasers #math #numbermania

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What's worse than a ‘hockey hairdo'?
A croquet mullet.

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Rocket

In 1926, the first US liquid-fuel rocket flight was launched by Robert Goddard in a field in Auburn, Mass. He thought stable flight could be obtained by mounting the rocket ahead of the fuel tank. The tank was shielded from the flame by a metal cone and was pulled behind the rocket by the lines for gasoline fuel and oxygen. The design worked, but did not produce the hoped-for stability. The rocket burned about 20 seconds before reaching sufficient thrust (or sufficiently lightening the fuel tank) for taking off. During that time it melted part of the nozzle. It took off to a height of 41-ft, leveled off and within 2.5 seconds hit the ground 184 feet away, averaging about 60 mph. The camera ran out of film, so no photographic record of that flight remains.

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